effect of dietary protein quality on nitrogen isotope discrimination in mammals and birds

We tested the competing hypotheses that (1) nitrogen discrimination in mammals and birds increases with dietary nitrogen concentration or decreasing C:N ratios and, therefore, discrimination will increase with trophic level as carnivores ingest more protein than herbivores and omnivores or (2) nitro...

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Veröffentlicht in:	Oecologia 2005-08, Vol.144 (4), p.534-540
Hauptverfasser:	Robbins, C.T, Felicetti, L.A, Sponheimer, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Amino acids Animals Aves Birds Birds - metabolism Carbon - metabolism carbon nitrogen ratio Carnivores Diet Diet - veterinary Dietary protein Dietary Proteins - metabolism Food Chain Fruits Herbivores Isotopes Linear Models Mammalia Mammals Mammals - metabolism Nitrogen Nitrogen - metabolism nitrogen content Nitrogen Isotopes - metabolism Omnivores Proteins stable isotopes Trophic levels trophic relationships wild animals wild birds
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